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Animation: World’s Largest Megacities by 2100

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Animation: The World’s Largest Megacities by 2100

Throughout the course of human history, the biggest cities have always seemed impossibly large.

For many millennia, it was almost unfathomable for a city to sustain more than 1 million residents. In fact, it wasn’t until the 19th century that the largest cities globally, such as London and Beijing, were able to consistently hold populations beyond that impressive mark.

Despite this, in the modern era, we’ve quickly discovered that a city of 1 million people isn’t remarkable at all. In China alone, there are now over 100 cities with a million people today – and as such, our mental benchmark for what we consider to be a “big city” has changed considerably from past times.

Thinking Big

Just like a city the size of modern Tokyo was hard to imagine for someone living in the 19th century, it can be an extremely difficult thought experiment for us to visualize what future megacities will look like.

Researchers at the Global Cities Institute have crunched the numbers to provide us with one view of the potential megacities of the future, extrapolating a variety of factors to project a list of the 101 largest cities in the years 2010, 2025, 2050, 2075, and 2100.

Today’s video uses this data – it’s also an extension to the previous work we did based on the report here.

The Largest Megacities by 2100

According to the report, human geography will look completely unfamiliar by the turn of the century.

Here is a list of the 20 largest megacities projected for 2100:

RankPopulation (2100)CityCountry
#188.3 millionLagosNigeria
#283.5 millionKinshasaDRC
#373.7 millionDar Es SalaamTanzania
#467.2 millionMumbaiIndia
#557.3 millionDelhiIndia
#656.6 millionKhartoumSudan
#756.1 millionNiameyNiger
#854.3 millionDhakaBangladesh
#952.4 millionKolkataIndia
#1050.3 millionKabulAfghanistan
#1149.1 millionKarachiPakistan
#1246.7 millionNairobiKenya
#1341.4 millionLilongweMalawi
#1440.9 millionBlantyre CityMalawi
#1540.5 millionCairoEgypt
#1640.1 millionKampalaUganda
#1740.0 millionManilaPhilippines
#1837.7 millionLusakaZambia
#1936.4 millionMogadishuSomalia
#2035.8 millionAddis AbabaEthiopia

By the year 2100, it’s estimated that 13 of the world’s largest megacities will be located in Africa. Meanwhile, India will hold three of them – and there will be zero of them found in the Americas, China, or Europe.

Here’s a final look at the top three:

#1: Lagos, Nigeria
Nigeria’s largest city, Lagos, is expected to push the limits of how big a metropolis can get. Already, Lagos has seen explosive growth over the past few decades, and is growing so fast that no one really knows how many people live there. Over 2,000 people emigrate to the city every day, and current population estimates vary widely from 11 to 21 million inhabitants.

Either way, by the turn of the century, Lagos is projected to have a population north of 88 million.

#2: Kinshasa, DRC
Kinshasa, the capital of the Democratic Republic of Congo is projected to be the second largest city in the world with a population of 83 million.

#3: Dar Es Salaam, Tanzania
Dar Es Salaam, a city on the coast of Tanzania, has a population of just 4.4 million today. By 2100, its population is projected to jump by a whopping 1,588%, putting the total at 74 million inhabitants.

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Mapped: The World’s Top 10 Cities in 2035

Cities are heavy hitters in the global economy. Where will the top 10 cities be in 2035—based on GDP, population, and annual growth?

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Mapped: Where Will The Top 10 Cities Be in 2035?

Cities are the engines of the modern economy. Over half of the world now lives in urban areas, and urbanization continues to shape the trajectory of global growth in unprecedented ways.

However, the most important cities of today may be quite different than those leading the charge in the future. This week’s chart looks forward to 2035, using a report by Oxford Economics to forecast the top 10 cities by measures of economic size, population, and GDP growth rate.

Each map is categorized by one of these metrics—and depending on which one you look at, the leaders vary greatly.

Top 10 Cities by Projected GDP

The top 10 cities by gross domestic product (GDP) in 2035 will be fairly widespread. Three cities are expected to be in the U.S.—New York, Los Angeles, and Chicago. The Big Apple’s forecasted $2.5 trillion GDP likely stems from its strong banking and finance sectors.

RankCityCountry2035 GDP
#1New York🇺🇸 United States$2.5T
#2Tokyo🇯🇵 Japan$1.9T
#3Los Angeles🇺🇸 United States$1.5T
#4London🇬🇧 United Kingdom$1.3T
#5Shanghai🇨🇳 China$1.3T
#6Beijing🇨🇳 China$1.1T
#7Paris🇫🇷 France$1.1T
#8Chicago🇺🇸 United States$1.0T
#9Guangzhou🇨🇳 China$0.9T
#10Shenzhen🇨🇳 China$0.9T

Four cities will be found in China, while London, Paris, and Tokyo are set to round out the last three. Interestingly, Tokyo is the #1 city today, with an estimated $1.6 trillion GDP in 2019.

Altogether, these top 10 cities will contribute an impressive $13.5 trillion in GDP by 2035. Clusters of such metropolitan areas are typically considered megaregions—which account for a large share of global economic activity.

Top 10 Cities by Future Population

Next, it’s clear that top cities by population will follow a distinct global distribution. By 2035, the most highly-populated cities will shift towards the East, with seven cities located in Asia.

RankCityCountry2035 Population
#1Jakarta🇮🇩 Indonesia38 million
#2Tokyo🇯🇵 Japan37.8 million
#3Chongqing🇨🇳 China32.2 million
#4Dhaka🇧🇩 Bangladesh31.2 million
#5Shanghai🇨🇳 China25.3 million
#6Karachi🇵🇰 Pakistan24.8 million
#7Kinshasa🇨🇩 DR Congo24.7 million
#8Lagos🇳🇬 Nigeria24.2 million
#9Mexico City🇲🇽 Mexico23.5 million
#10Mumbai🇮🇳 India23.1 million

While Jakarta’s 38 million-strong population is expected to emerge in first place, the city may not retain its status as Indonesia’s capital for much longer. Rising sea levels and poor water infrastructure management mean that Jakarta is rapidly sinking—and the government now plans to pivot the capital to Borneo island.

On the African continent, Kinshasa and Lagos are already among the world’s largest megacities (home to over 10 million people), and will hold top spots by the turn of the century.

Population and demographics can be major assets to a country’s growth. For example, India’s burgeoning working-age demographics will present a unique advantage—and the country is projected to contain several of the fastest growing cities in the coming years.

Top 10 Cities By Estimated Annual GDP Growth

When comparing cities based on their pace of economic growth, there are some clear standouts. Average annual GDP growth across cities is 2.6%, but the top 10 surpass this by a fair amount.

The kicker? All of 2035’s major players will be found in Asia: four of the fastest-growing cities will be in mainland China, another four in India, and the last two in Southeast Asia.

RankCityCountryAnnual Growth
#1Bengaluru🇮🇳 India8.5%
#2Dhaka🇧🇩 Bangladesh7.6%
#3Mumbai🇮🇳 India6.6%
#4Delhi🇮🇳 India6.5%
#5Shenzhen🇨🇳 China5.3%
#6Jakarta🇮🇩 Indonesia5.2%
#7Manila🇵🇭 Philippines5.2%
#8Tianjin🇨🇳 China5.1%
#9Shanghai🇨🇳 China5.0%
#10Chongqing🇨🇳 China4.9%

At #1 by 2035 is Bangalore with an expected 8.5% annual growth forecast—its high-quality talent pool makes the city a breeding ground for tech startups. Jakarta makes another appearance, with its projected 5.2% growth at double the city average.

Shanghai finds its way onto all three lists. The commercial capital hosts the world’s busiest port, and one of China’s two major stock exchanges. These sectors could help boost Shanghai’s annual GDP growth to 5% in 2035.

Looking to the Future

Of course, any number of variables could impact these 2035 projections, from financial recessions and political uncertainty, to rapid urbanization and technological advances.

But one thing’s certain—in the coming decades, cities are where many of these factors will converge and play out.

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Form and Function: Visualizing the Shape of Cities and Economies

Economies create distinct spatial patterns. This week’s chart visualizes the relationships businesses and industry imprint on the urban environment.

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Visualizing the Shape of Cities and Economies

The Industrial Revolution changed the form and function of cities. New patterns of work resulted in massive wealth and distinct advantages for certain regions. Urbanization emerged as a defining characteristic of this age.

During the latter part of the Industrial Revolution, Cambridge School economist Alfred Marshall looked at a particular question: why did certain industries concentrate in specific places?

Marshall argued that the local concentration of industry created powerful economies promoting technical dynamism and innovation.

This Chart of the Week highlights the spatial patterns and business relationships created at the urban scale. Marshall’s insights from the past help us understand present-day tech and media economies and the massive growth of urban regions.

The Logic of Concentration

Marshall observed that industrial concentration led to long-term tendencies such as increasing returns on capital and compounding regional advantages.

The heart of this observation is that knowledge resides within the companies that make up a particular industry. Over time, these companies can accumulate even more information and direct the flow of new and innovative ideas. This creates local specialization and increasing profits, while also concentrating success, knowledge, and wealth into one key locale.

He defined this pattern as a Marshallian Industrial District.

An Evolving Landscape: Four Patterns

Marshall’s work would later influence the work of Ann Markusen, who created a typology of three additional industrial patterns. The patterns identify what makes a city attractive or repellent to income-generating activities.

District Type: Description: Example:
Marshallian Industrial District This is a clustering of firms in a similar industry, operating within a certain geographic area. Social media marketing companies in San Francisco
Satellite Platform District A set of unconnected branches with links beyond regional boundaries, each part of its own globally oriented supply chain. Suburban neighborhoods
Hub and Spoke District An industrial sector with suppliers clustering around one, or several, dominant firms. Airplane manufacturer Boeing and the region of Seattle.
State-anchored District Industrial activities are anchored to a region by a public or non-profit entity, such as a military base, a university, or a concentration of public laboratories or government offices. Madison, WI and Columbus, OH are examples of university towns, as are many cities with large defense installations such as Pearl Harbor in Hawaii.


There are both benefits and problems—called “externalities”—associated with the spatial agglomeration of physical capital, companies, consumers, and workers:

Advantages Disadvantages
  • Low transport costs
  • A great local market
  • A large supply of labor
  • Increased chance of supply and demand for labor
  • Lower search costs and fast matching of products and labor
  • Knowledge spillovers between firms
  • Strong environmental pressures
  • High land prices
  • Bottlenecks in public goods (e.g. poor/overburdened infrastructure)
  • Corruption
  • High competitive pressure
  • Economic inequality

Clusters for a Digital Age

In the past, the physical constraints of an area defined the structure of cities. Now that so many companies are free from the shackles of producing physical goods, does geography still matter?

Researcher Marlen Komorowski re-examined the concept of clustering with this question in mind. Here are five types of media clusters identified in her research.

The Shape of Media Clusters

District Type: Description: Example:
The Creative Region A metropolitan region that provides advantages due to readily available infrastructures and institutions, and encourages the development of face-to-face interaction and collaboration networks. Berlin, Singapore, Amsterdam
The Giant Anchor A location defined by the activities of one or several large media institutions, which attract complementary firms to agglomerate. Similar to the hub-and-spoke cluster model. Seattle, (Microsoft, Amazon), and Cambridge (Harvard, MIT)
The Specialized Area A media cluster that is located either in a neighborhood within a big metropolitan area or in a small urbanized area. The Specialized Area is marked by a readily available, large pool of employees from a specialized field. Soho (London), Silicon Valley
The Attracting Enabler Determined by the location of certain facilities or resources that can be shared that enable media activities. Movie studios are a prime example. Los Angeles, Vancouver
The Real Estate This type of cluster is centered around office space, sometimes purpose-built for media and creative companies. This space can also include incubators / accelerators. Dubai Media City, Dublin’s Digital Hub


Four rationales drive these patterns: agglomeration, urbanization, localization economies. and artificial formation.

The Shadow of the Industrial Revolution

Alfred Marshall made the argument that local concentration of industry can offer powerful economies and technical dynamism and innovation.

We now see this pattern with the emergence of megacities that accrue the majority of the financial and knowledge returns. These megaregions set the perfect stage for dynamic economic exchanges between skilled labor, technology, and networks.

What does your city look like?

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